Tiger by Ali Murray


TIGER
[panthera tigris]
by Ali Murray

Description and Ecology 
Tigers have a reddish-orange and black striped coat, which the stripes vary in size, length, and spacing. Under the belly, throat, and chest, above the eyes, and a spot on the back of each ear, are white. Their wide necks, large forelegs, and broad shoulders allow them to be successful when attacking prey with their claws. The tongue has papilla, small round protrusions, to make eating the meat from the bones of their prey easier. Between 7.5 to 10 inches, Tiger canines are the largest of any cat. Tigers are endothermic, warm blooded, and have bilateral symmetry. Males are larger than females, but weigh around 91 to 423 kg and 2 to 4 m long.
Tigers need to kill 50-60 large prey animals per year. They are opportunistic predators and typically hunt for pigs, deer, birds, fish, amphibians, rodents, insects, amphibians, reptiles, porcupines, primates, and others. They also can take down animals larger than themselves, like buffalo, elephants, and rhinos. Tigers are precautious and stealthy night hunters, ambushing their prey, biting at the back of the neck or the throat for larger animals. There are no known predators of tigers other than humans. Tigers are keystone species, regulating herbivore populations which allow plant species to flourish. Tigers are an “umbrella species”, meaning saving them, will save the entire ecosystem that depends on them.
     Adult male Tigers are territorial over their home ranges, overlapping with 1-3 females, while female home ranges rarely overlap. Home ranges are small where prey is abundant, about 20 square km to 400 square km, and some densities are 17-19 Tigers for every 100 square km where there is abundant prey, and as low as 0.3 per 100 square km where prey is scarce. Female Tigers reach maturity between 3 and 4 years, and males reach maturity between 4 and 5 years. Breeding season is year-round (most common November to April), and may occur every 3 to 4 years, depending on the dependency of the cubs. Tigers are polgygynadrous, where males and females have multiple partners, which the females are fertile every 3 to 9 weeks, and the gestation period is about 100 days, when an average of 2 to 3 cubs are born. The mother spends the first 10 days of the cubs’ lives nursing them while they are blind and deaf. The cubs can join in on hunting excursions by 6 months old, but stay with their mother until they are 1.5-3 years old. Male Tigers do not care for the cubs. 
      Generation length ranges from 6.5 to 10 years. In captivity, Tigers can live 16 to 26 years, while in the wild, 8 to 10. A lot of adult tigers die from hunting, and sometimes fatally injured from trying to take down large prey. Some young tigers may be eaten by older male tigers when leaving their mother’s side.

Geographic and Population Changes
In 1998, the global population consisted of about 6,000 Tigers. Tigers are currently found in less than 6% of their historical range: Bangladesh, Bhutan, India, Indonesia, Malaysia, Nepal, Russia, and Thailand. Geographic range: Tigers were found in Asia, Turkey, northern Iran, Afghanistan, Pakistan, Laos, Thailand, Vietnam, Cambodia, Malaysia, and Bali. Now they are relatively stable in northeastern China, Korea, Russia, and parts of India and the Himalayan region. The wide range of habitats that Tigers are found in are tropical lowland evergreen forest, monsoonal forest, dry northern forest, scrub oak and birch woodlands, tall grass jungles, and mangrove swamps. The ability of Tigers to cope with many climates allow them to live in diverse places, like places with high humidity, extremely cold climates, and high elevations. Tiger range was 1.5 million square km, and then about 1.1 million square km, and now 42 source sites, only about 90,000 square km. The current estimate population of mature Tigers is 3,159.
There is a continuing decline of mature individuals and population is severely fragmented. Tiger’s range now depends on the Asian governments to enable habits for Tigers and to mitigate the human-tiger interactions.

Listing Date and Type of Listing
Endangered Red List in 2015, under C1 because the population of mature individuals is predicted to be fewer than 2,500 individuals. The population has declined during the last 14 years by 20%, and continues to decline. Since 1986, Tigers have been on the Red List for endangered species.

Cause of listing and Main threats to its continued existence
The only known predator of Tigers are humans, from poaching pressure, deforestation and habitat fragmentation. Humans use tigers in zoos as an attraction, killed for their fur, and use of their parts for traditional Chinese medicine. In the early 1990s, the poaching of Tigers for traditional Asian medicine for anti-inflammatory use of their bones was high, even though it has proved to be more psychologically helpful than physically. The illegal trade remained, and there were cases of intensive breeding of Tigers where there 6,000 captive Tigers for medicinal use. The medicinal use has decreased since China banned Tiger bone in 1993. CITES 2008 stated that Tigers should no longer be bred for their bone use. Tigers are also poached for their skins, teeth, and claws. People also kill them for the means of protecting their life and livestock, and then used in the illegal trade. Each year about 150 Tigers are seized from the illegal trade, which is only a fraction of the extent of illegal trade of Tigers. Primary threat is poaching for illegal trade for their skins, bones, meat, and tonics. Human development in wild areas, causing the transition of forests to agriculture and silviculture, commercial logging, and human settlement, the Tiger habitat has significantly decreased. Because of competition with human hunting subsistence and from domestic livestock, Tiger’s prey base is lowered. Neighboring communities are unaccepting of Tigers because of their proximity and resulting attacks on livestock and humans. Many subspecies of the tiger are critically endangered, and some are extinct.

Description of Recovery Plan
To double the population of Tigers by 2022, we need to:
  • Efficiently manage, preserve, defend, and improve Tiger habitats by creating critical habitats for tiger conservation lands where development is restricted, connecting the lands between them, and improving security for tigers, the habitat, and their prey.
  • Cease poaching, smuggling, and illegal trade of Tigers by strengthening law enforcement, international coordination, agencies to find people who are participating in the trade, and spreading awareness of the endangerment.
  • Collaborate in international management and in combating illegal trade through making laws stronger internationally.
  • Engage with indigenous and local communities by reducing their proximity and lower human-tiger interaction.
  • Increase the success of tiger and habitat management by monitoring tigers and the ecosystem and employing adaptive management practices.
  • Study and activate domestic and new funding, including ecotourism and other donor investments.
  • Enable tigers to enter their historical range.
WWFThese efforts are made in hopes to:
  • Restore Tiger populations
  • Protect and enhance the critical habitats
  • Cease wildlife crime
  • Spread awareness of the harm so the demand for tiger products decrease
  • Involve the community and gain volunteers
  • Effectively manage the tiger habitats
  • Use an effective amount of money towards tiger and habitat conservation.



What can you do?
Tx2 Goal: The goal before the Chinese Year of the Tiger in 2022 is to double the world’s tiger population. To do this, the protection needs to strengthen, connection between conservation areas need to be connected, and the resources need to be available for them once there are more. For the first time, numbers of tigers are increasing, as of 2016. Many people are unaware of this issue, so please tell more people about it! WWF has social media pages which you can follow and stay updated with what is going on.
Never purchase anything involved with the trade of endangered species, including Tigers. Commodities may be skins, furs, claws, teeth, bone wine, meats, medicines, raw or carved ivory, and jewelry, whether it contains tiger products or another endangered species. Stay aware that our decisions affect the entire world, including the Tigers. There are ways to fund raise, donate, and volunteer to help and protect tigers. Finally, you can make an “adoption” with WWF which gives you an information pack and a stuffed animal, giving a donation.

Resources


 

Comments

  1. The idea that tigers are currently using less than 6% of their historical range is an alarming statistic. Puts an image in your head of how much the tigers have decreased and how much help they need!

    - Jordan Opet (Group 7)

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  2. Your Description and ecology section was very detailed without dragging on, all the facts you chose to put in were very interesting, especially how abundant prey greatly affects the range.
    ~Sage Massey

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  3. Good job including a lot of information without overwhelming the reader. The pictures and layout help with this as well. Crazy how many tigers are taken by humans every year for the illegal trade. Also like the way you organized your “What you can do” section. Very good information.

    -Perry Nalle

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  4. You used the pictures in your blog very well. I loved the amount of detail that you provided in the large amount of information that you provided. Plus, it all was very organized so it was easy to process it all when reading it.

    -Mckenna Moura

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  5. You did a great job on this blog! You were super interesting and descriptive in your writing about this topic. I loved your abundance of charts and photos and it just overall added a good visual appeal to your blog. I also really liked how descriptive your "what can you do" section is.
    -Parker Ornellas

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  6. There are so many threats to this beautiful wild cat! Thank you for going in detail describing how the tiger is poached for multiple body parts and sold for medicinal use, even being killed as a threat to livestock. I really appreciated your post on this flagship species.
    -Shannon O'Hehir

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  7. Your blog was very informative! Tigers is one of the animals that most people know, but lack detailed information about. I thought you provided this information very well and really liked the pie chart that you placed in your blog.
    -Christine Okimura

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  8. It was cool seeing how many animals tigers typically hunt because originally I only thought they hunted larger animals. Its neat to see that they are more opportunistic hunters and not selective. Good organization as well- helped to make the information easy to read!

    -Fiona McCallion

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  9. Reading information about the Tx2 Goal was really interesting. There was also a lot of detail in the ecology section of your blog, which was very easy to read and informative! The pictures and charts made the blog really engaging as well.
    -Kristen Nagamatsu

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  10. You did a great job of including a lot of detail and information without being overwhelming. I really enjoyed reading about the tiger, being a relatively known animal, but also learning so much

    -Bryn Mulligan

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  11. Really insightful post! You’ve shared some valuable ideas and inspiration here. I’ve recently published an article on Tadoba Safari that’s ideal for nature lovers—full of useful information. Please check it out!

    ReplyDelete

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